digestive system

Question 1

what does bile do?

Answer 1

it neutralises stomach acid and it also acts as an emulsifier

Question 2

where is bile produced?

Answer 2

the liver

Question 3

where is bile stored?

Answer 3

the gall bladder

Question 4

2.27 describe the structure & function of the human alimentary canal - what order does the food go through each organ?

Answer 4

• mouth
• oesophagus
• stomach
• duodenum (small intestine)
• ileum (small intestine)
• colon (large intestine)
• rectum (large intestine)
• anus

Question 5

2.27 describe structure & function of mouth/what happens in the mouth?

Answer 5

• ingestion takes place here
• digestion begins here - mechanical & chemical
• swallowing, flap called epiglottis which blocks food from entering the trachea

Question 6

what mechanical digestion happens in the mouth?

Answer 6

food broken up into smaller pieces in mouth by chewing. this inc SA for enzymes & also prevents discomfort when swallowing

Question 7

what’s the definition for digestion?

Answer 7

the breakdown of large insoluble molecules into small soluble molecules

Question 8

what is ingestion?

Answer 8

taking food in through the mouth & swallowing

Question 9

what is absorption?

Answer 9

the movement of small soluble molecules out of the gut & into the blood by diffusion and AT

Question 10

what is egestion?

Answer 10

passing out undigested food through the anus

Question 11

note to self: all digestion flashcards are on the 4th form eoy carousel thing (check biology team)